Stack-climber.



C. STOOLFIRE.

STACK CLIMBER.

APPLICATION FILED NOV. 3. 1914.

2 SHEETS-SHEET 1.

Patented Sept. 14, 1915.

C. STOOLFIRE.

STACK CLIMBER.

APPLICATION mm NOV. 3. 1914.

1 ,1 53,53. Patented Sept. 14, 1915.

2 SHEETS'SHEET 2.

CHARLES STOOLFIRE, OF MYRTLECRE EK, OREGON.

STACK-CLIMBER. I I

To all whom it may concern Be it known that I, CHA'RLEs STOOLFIRE, a citizen of theUnited States, and resident of Myrtle Creek, Douglas county, State of- Oregon, have invented certain new and use ful Improvements in Stack-Climbers, andmy preferred manner of carryingout the invention is'set forth in the following full, clear, and exact description, terminating with claims particularly specifymg the novelty.

The present invention is a scaffold adapt ed more particularly for use in climbing poles or stacks, which latter are sonietlmes tallpipes of sheet iron; and the special ob I ject of the present invention is to make improvements on my prior United States Pat ent No. 755809 issued March 29, 190 1. n The improvements will appear in the fol lowing specification and claims and are shown in "the accompanying drawings wherein- Figure 1 is a side elevation of'this 1mproved device applied to a stack which latter is indicated in dotted lines, and Fig. 2 is a rear elevation showing the lower member swung a little to theright. The membersin both these views are in biting engagement with the stack, Fig. 3 is a side elevation of the upper member showing its parts as they appear when it is disconnected or loose from the stack; and Fig. 4: is a plan view'of this member. Fig. 5 is a plan view of thelower member, and Fig. 6 a perspective detail thereof. n The principal parts of this scaffold "are two clutches of practically or nearly like construction, a pole or rod connecting them, elevating means, and a seat or scafioldj- The lower member comprises a flexible band 1 passing around the stack S and having, its ends threadedas at 2 and passing through perforations in ears 3 at'tlie'upper ends of a pair of levers 4:, behind which ears the threaded ends receive nuts 5. Between their extremities said levers are pivoted at 7 to brackets 8 carried by a plate 6 which bears against the face of the stack S, and the pivots 7 may well be made by means of a single rod extending through the two brackets and the two levers as seen in Fig. 6.

A seat 10 is mounted on supports 11 which are connected by the lower pivots 12 with the outer ends of the levers 4, and the seat is also connected pivotally by a brace 13 which extends forward and downward and has its Specification of Lettersiriatent, v

Patented Sept. 1a, 1915..

Application fi1ed November 3, 1 914. Serial Nb. 870,060. p

inner end. 14 pivoted at 15 within aloop 16 carried by a pair of rollers 17 which are strung on the pivot rod 7.- .The'inner ex-' tremity of the end 14 is in turn pivoted at 18 to the frame 19 ofa single pulley 31. The plate 6 carries foot rests 9' within reach of: an operator sitting on the seat 10.

,The upper member or clutch is of the same or like construction whereI have employed the same reference numerals with prlmes applied, excepting only with respect to the parts to which reference will be made. Hanging loosely between the two'brackets 8: and behind the rollers or roller 17 is a rod or pole 21 which leads upward past the upper clutch or member, where it is slotted as at 22 so that it shall slide over the uppermost pivot rod 7, and the upper member 'by preference carriesa guide 20 through which: the upper end of'this pole may move. Near its upper end said pole 21 carries an out-' standing bracket or arm 23 which carries the frame 19 ofan upper double pulley block 30; and the lower pivots 12"of the upper levers 4 vare 'connected by braces 13" withsaid' frame 19. Otherwise the construction of the upper member is much like that of the lower member, save perhaps that the foot rests 9 are omitted. A rope 32 is attached at 33 to the frame 19 of the lower pulley and is passed over one of the upper pulleys, thence down under the lower pulley, then upward over the other upper-pulley, and itsend hangs withmreach of an operator sitting on the seat 10 as seen in Fig. 11

In operation, the parts'are assembled and the bands passed loosely around the stack to be climbed, the nuts 5 being adjusted so that each member will clutch or grasp the stack whenits bandis canted with respect to its plate; The operator takes his seat and H as'far as possible'so that'the parts of "the upper member will assume the position shown in Fig. 3. That is to say, the clutch now releases the stack S, and the lower end of the slot 22 contacting with the pivot rod 7 raises this member so that the rope 32 runs out over the two pulleys. The operator now draws downward quickly on the pole, causmg the upper member to clutch the stack asseen in Fig. 1. Releasing the pole, he now grasps the rope 32 and pulls on it, thereby causing the braces 13 to cant the upper levers 4 and close the upper member yet more tightly around the stack. Continued pulling on the rope 13 drawsupward on the lower pulley 31 and eventually lifts the lower member and the operator as will be clear. 1

In order to make this easy, the operator bears downward on the foot rests 9 which throws his weight onto the plate 6 and takessome of it off the seat 10. Having drawn himself up along the stack, he settles back on his seat and causes the lower member to again clutch the stack; and the operation is then repeated. For moving around the stack as he is painting it, he engages the upper member with the stack and then swings the lower memberto the left or to the right as seen in Fig. 2; then disengages the upper member and swings it in the direction he wishes to travel. For descending, theoperation is simply reversed. The upper plate I 6 has stops 35 for preventing the upper band from falling below a horizontal position when it frees the stack. The parts are preferably entirely of metal excepting the rope, and the pole might be of wood.

although I would'prefer a rigid rod, and

perhaps a tube for sake of lightness.

WVhat is claimed as new is:

1. A stack-climber comprising two clutches, each including two levers connected betweentheir ends by a cross rod, ascafi'old per end of said pole, connections between said arm and the outer end of said levers, a pulley. carried by sa1d arm, and a rope rove over sald pulleys.

2. A stack-climber comprising clutches whereof each includes a plate having brackets connected by a straight rod, a pair of levers pivoted between them ends on said rod, a band passing around the stack and connections between its ends and the inner ends of sald levers; combmed with a seat pivotally supported on the outer ends of the lower levers, a brace loosely connected with the seat and lower rod, a pulley. car- I ried by saidbrace, a pole extending loosely behind the lower rod and upward to the upper rod and having a slot for the recep- Oopies oi this patent may be obtained for five cents each, by addressing Washington, D. 0.

two

tion of said rod, above which it carries an outstanding rigid arm, a brace pivotally connecting-saidarm with the outer ends of the upper levers, an upper pulley carried by -Sit1(1 arm, and a rope rove over said pulleys and hanging within reach of the seat.-

3. A stackclimber comprising two clutches whereof each includes a plate having a crossrod, a pair of leverspivoted between their ends on said rod and a band passingaround the stack and connect ed with the inner ends of said'levers; combined with a seat supported on the outer ends of the lower levers, a brace connecting the seat and the lower rod, a pulley carried by said brace, foot rests on the lower plate, a, pole passing loosely behind both rods, 2. guide for said pole carried by the upper plate, a bracket carried by the pole between the upper rod and guide, loose connections between said bracket and the outer ends of the upper levers, a pulley carried by said bracket, and a rope rove overs aidjpulleysj and hanging within reach of the seat.

4:. A stack climber comprising two clutches whereof each includes a plate having brackets connected by a cross rod, a pair of levers pivoted between their ends on said rod, and a band passing around the stack and having its ends adjustably connected with the inner ends of said levers; combined with a seat pivotally supported on the outer ends of the lower levers, a brace loosely connecting the seat withthelower rod, a pulley carried by said brace, a pole passing loosely behind both rods and'turned outward into an arm, flexible connections between said arm and the lower ends of the upper levers,

an upper pulley carried by said arm, stops on the upper plate beneath its'band, and a roperove over said pulleys and hanging within reach of the seat. p

In testimony whereof I have hereunto subscribed'my signature this'the 28th day of a 7 October, A. 1914. V I 7 CHARLES STOQLFIRE.

l/Vitnesses Enrrrr WYNNn STOOLFIRE, KrrT ACKERT.

the Commissioner of Patents, 

